Printer&#39;s quoin.



No. 736,077. PATENTED AUG. 11, 1903. W. s. DECKER.

PRINTERS QUOIN.

APPLICATION FILED MAR. 21, 1903,

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UNITED STATES Fatented August 11, 1903..

PATENT OFFICE.

PRIINTERSI uom.

SPECIFICATION forming part of Letters Patent No. 736,077, dated August 11, 1903. Application filed March 21, 1903. Serial No. 148,852. (No model.)

To all whom it may cor warn:

Be it known that 1, WILLIAM Soorr DECK- ER, a citizen of the United States, and a resident of Dallas, in the county of Dallas and State of Texas, have invented a new and Improved Printers Quoin, of which the following is a full, clear, and exact description.

The invention relates to printers lock-ups;

and its object is to provide a new and i111- IO proved printers quoin arranged to insure is represented in the accompanying drawings,

forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of the improvement. Fig. 2 is a horizontal section of the same. Fig. 3 is a transverse section of the same on the line 3 f Fig. 2. Fig. at is a sectional elevation of the same on the line 4 4 of Fig. 3, and Fig. 5 is an inverted plan 0 view of one of the wedges.

The similar wedges A and B are provided on their inner faces with gear-teeth O C for engagement by the key employed for sliding the wedges one on the other in opposite di rections in the usual manner. The wedges are provided with heads D D, formed with longitudinal guideways D D for guiding longitudinal ribs E E, the rib E being integrally formed on the inner face of the wedge B and the rib E being similarly formed'on 5b means to the said wedge.

the inner face of the wedge A, but this rib E is provided with ratchet-teeth E adapted to be engaged by a pawl F, mounted to slide on and to turn in the head D of the wedge B.

The outer end of the pawl F is pressed on by the free end of a spring G, arranged longitudinally in a recess B, formed on the outer face of the wedge B, the said fiat spring G being secured by a rivet or other suitable As shown in Fig. 2, the outer end of the pawl F is mounted to turn on the free end of the spring G, and the said pawl is provided with a transversely-extending pin F, extending into bayonet-slots D, formed in the side of the head D, and the said head has cut-out portions D in its sides to permit convenient access to the ends of the pin F to enable the operator to conveniently manipulate the said pin when the quoin is in position in the form. Normallythe pin F is in the, position shown in Figs. 1, 2, 3, and 4:, so that the spring G forces the pawl Fin engagement with the ratchet-teeth E formed on the rib E of the wedge A, to lock the Wedges against return movement. ,When it is desired to disengage the pawl F from the ratchet-teeth E then the operator presses on the outer end of the pin F to slide the pawl F outwardly out of engagement with the ratchet teeth E and ,when this has been done the pin F is moved sidewise at its outer end into the angular portion of the bayonet-slot D to lock the pawl F against inward movement.

It is understood that when the pawl F is moved outward it moves against the tension of its spring G, and when the pawl is again especially as the head D has cut-out portions D for gaining access to the pin F. It will also be seen that in case the spring Gbreaks it can be readily replaced bya new one, as it is conveniently located in the outer face of the wedge 13. 1

Having thus described my invention, I claim as new and desire to secure by Letters Patent- A printers quoin, comprising similar wedges, ofwhich one has its longitudinal rib provided with ratchet-teeth and the other with a recess in its outer face, and having an opening leading through to its inner face and bayonet-slots leading from the opening to the sides of the wedge, a pawl mounted to turn and to slide in the said opening and adapted to engage the said ratchet-teeth, a flat spring secured in said recess on the outer face of the wedge and pressing the said pawl into engagement with the ratchet-teeth, and a pin projecting from each side of the pawl into the bayonet-slots, the head of the wedge having cut-out portions on its sides leading to said slots, the angular extensions of said bayonetslots extending one rearwardly and the other forwardly at apoint suitably spaced from the 10 pawl to simultaneously receive the ends of said transverse pins when the pawlis moved into inoperative position and rotated to lock it in said position.

In testimony whereof I have signed my name to this specification in the presence of I 5 two subscribing witnesses.

WILLIAM SCOTT DECKER. Vitnesses:

W. V. OULLUM, W. G. SEARFF. 

